adding integers
-8 + 12
= 4
-90 - 90
= -180
-7 x 8
= -56
-8 / 8
= -1
1+7/2
= 4.5
-20 + 30
= 10
76 - -42
= 118
-21 x 5
= -105
-12 / 2
= -6
5+3/2
= 6.5
34 + -32
= 2
-95 - 65
= -160
-34 x 7
= 238
-23 / 5
= -4.6
-7 x 3/1
= -21
-78 + -65
= -143
-432 - 333
= -765
-43 x 12
= -516
-55 / 45
= 1.22
12+32/6
= 17.3
-675 + 462
= -213
-675 - 462
= -1137
-87 x 12
= -1044
-157 / 12
= -13
9 x 21/7
= 27